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Mapper 023: Add support for odd-sized Contra hacks.

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NewRisingSun
2025-04-11 16:10:27 +02:00
committed by LibretroAdmin
parent 43e6496351
commit 38e0f03cf1
1 changed files with 2 additions and 1 deletions
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3
src/boards/21_22_23_25.c
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@@ -23,9 +23,10 @@
static void sync () {
VRC24_syncWRAM(0);
VRC24_syncPRG(0x01F, 0x000);
VRC24_syncPRG(0x03F, 0x000); /* A real VRC4 has a PRG-ROM maximum of 256 KiB, but some hacks use more than that. */
VRC24_syncCHR(0x1FF, 0x000);
VRC24_syncMirror();
if (ROM_size &1) setprg16(0xC000, ROM_size -1); /* A number of Contra hacks have a PRG-ROM size of 400 KiB, expecting the last 16 KiB to be determined via subtraction. They would not work on real hardware. */
}
void Mapper21_Init (CartInfo *info) {